Difference !!!

[Hadi Rezaee]

Hi all, What is difference between E_FAIL and S_FALSE ??? Thanks for helps ... My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie

[Lost User]

E_FAIL (0x80004005) indicates, that the function fails. No further processing is possible (e.g. an object cannot be instanciated). Script languages are throwing exceptions in this case. S_FALSE (0x00000001) indicates, that the function has no effect or has no results. In script languages no exception will occur. Volker

[Not Active]

These can also be used to inform of fatal and non-fatal errors. S_FALSE may be returned from a method when it partially succeeded. For example numbers were calculated correctly but were of insufficient range. HRESULT Calculate(int x, int y) { if( x > 5000 || y > 5000) return E_FAIL; // return failure because these numbers are greater than // possible range expected if( (x + y) < 500 ) return S_FALSE; // return false because it worked but just wasn't high enough else return S_OK; }

[Ben M Stokland]

E_FAIL will also throw an exception if you use Visual Basic, and S_FALSE will not.